diff --git a/apps/optical/src/main/java/org/onosproject/optical/cfg/OpticalConfigProvider.java b/apps/optical/src/main/java/org/onosproject/optical/cfg/OpticalConfigProvider.java
index f23b5f2..dbe0b54 100644
--- a/apps/optical/src/main/java/org/onosproject/optical/cfg/OpticalConfigProvider.java
+++ b/apps/optical/src/main/java/org/onosproject/optical/cfg/OpticalConfigProvider.java
@@ -57,6 +57,7 @@
  * optical links and any other state that needs to be configured for correct network
  * operations.
  *
+ * @deprecated in Cardinal Release
  */
 @Deprecated
 @JsonIgnoreProperties(ignoreUnknown = true)